雨课堂学堂在线学堂云《Medical Physiolgy》单元测试考核答案

注：不含主观题第1题单选题(1分)ThephysicalandchemicalpropertiesofthenormalbodyenvironmentarealwaysintherangeofAfixedBrandomCabsolutelyconstantDrelativelystableEdrasticfluctuations第2题单选题(1分)ThemostactivepartoffluidsfromallpartsofthebodyisAICFBtissuefluidCplasmaDlymphaticECSF第3题单选题(1分)TheinternalenvironmentoftheorganismisAintracellularfluidBextracellularfluidCintracellularspaceDinterstitialspaceEblood第4题单选题(1分)ConditionedreflexbelongstoApositivefeedbackregulatingBnegativefeedbackregulatingCautoregulationDfeedforwardcontrolEnoneofaboveistrue第5题单选题(1分)ThebasicwayofNeuromodulationisAreflectionBreflectedfeedbackCfeedforwardDpositivefeedbackEnegativefeedback第6题单选题(1分)Whenthebodyisinastateofemergency,secretionofepinephrineandnorepinephrinebelongstoAsystemichumoralregulationBlocalhumoralregulationCneuromodulationDautoregulationEneuro-humoralregulation正确答案：E第7题单选题(1分)()belongstopositivefeedbackregulationAbloodcoagulationBantihypertensivereflexCtemperatureregulationDregulationofgastricacidityongastrichydrochloricacidsecretionEregulationofbloodcalciumconcentrationonPTHsecretion第8题单选题(1分)Increasedinsulinsecretionaftermealscontributestothestabilizationofbloodsugarlevels,

andthisformofhormonalactionbelongstoAautocrineBhormonetelepathicCparacrineDneurosecretoryEautoregulation第9题单选题(1分)FeedonfanciesbelongstoA

conditionedreflexesB

humoralregulationCunconditionedreflexesDautoregulation第10题单选题(1分)Whenthemeanarterialpressurefluctuatesinacertainrange,thestabilizationoftherenalbloodflowbelongstoAconditionedreflexesBhumoralregulationCunconditionedreflexesDautoregulation第11题单选题(1分)InsulinsecretedbyBcellswhichistolowerbloodsugarbelongstoA

conditionedreflexesBhumoralregulationCunconditionedreflexesDautoregulation第12题多选题(2分)ThecharacteristicofneuromodulationisthatArapidreactionspeedBaccuraterangeofactionCshortdurationofaction;Dthemostimportantregulationmodeofthebody正确答案：ABCD第13题多选题(2分)ThecharacteristicofhumoralregulationisthatAslowspeedBlongdurationCpreciseeffectDwiderangeofeffects正确答案：ABD第14题多选题(2分)ThecharacteristicsofnegativefeedbackregulationareArepeatedinaclosedloopBfluctuatedCrepeataroundasetpointDmaintainbodyhomeostasis正确答案：ABCD第15题多选题(2分)ThecharacteristicsofpositivefeedbackregulationareAproducesA"snowball"effectBusuallyworkslocallyandintheshorttermCThereisnoefficacyincorrectingdeviations.Dpathologicalconditionsoftenleadtoaviciouscircle正确答案：ABCD第16题多选题(2分)WhichofthefollowingphysiologicalfunctionsbelongtonegativefeedbackcontrolATheriseofbloodsugarcausesthesecretionofinsulin.BExcessivegastricacidinhibitsthesecretionofgastricjuiceCIodinedeficiencyleadstogoiter.DIncreasedaldosteroneleadstodecreasedbloodK+正确答案：ABC第17题多选题(2分)WhichofthefollowingphysiologicalprocesseshaspositivefeedbackregulationAurinationanddefecationreflexBNa+flowintheactionpotentialdepolarizationphaseofnervecellsCbloodcoagulationprocessDdeliveryprocess正确答案：ABCD第18题多选题(2分)WhichofthefollowingstatementsaboutfeedforwardiscorrectAfeedforwardispredictiveBfeedforwardcontrolsometimesfailsCfeedforwardhasthecharacteristicsofhysteresisandfluctuationDfeedforwardinformationreachesthecontrolpartbeforethefeedbackinformation正确答案：ABD章节测试第1题单选题(1分)TheindexusuallyusedtomeasurethelevelofexcitementofanorganizationisAThresholdpotentialBTimevalueCThresholdintensityDStimulusintensitychangerateEFrequencyofstimulation第2题单选题(1分)Theprocessofskeletalmusclecellmembranepotentialchangingfrom-80mVto-30mViscalledAHyperpolarizationBDepolarizationCRepolarizationDDepolarizationEOvershoot第3题单选题(1分)Underquietconditions,thecellmembraneismorepermeabletowhichions()AK+BNa+CCa2+DCl-EH+第4题单选题(1分)WhentheK+equilibriumpotentialisreached,thecellmembrane()ATheK+concentrationgradientonbothsidesiszeroBTheK+concentrationontheoutsideishigherthantheinsideofthemembraneCThepotentialgradientonbothsidesiszeroDThenetoutflowofK+iszeroEThepotentialinsidethemembraneisrelativelypositivecomparedtotheoutsideofthemembrane第5题单选题(1分)Thedescriptionoftheprincipleofneuronactionpotentialiscorrect()ATheconcentrationofNa+insidethecellishigherthanthatoutsidethemembraneBWhenthecellsarestimulatedandexcited,Na+channelsopentocauseNa+outflowCAlargeamountofNa+outflowmakesapositivepotentialoutsidethemembraneandanegativepotentialinsidethemembraneDWhentheequilibriumpotentialofNa+isreached,theoutflowofNa+stopsETheNa+channelisinactivated,theK+channelisfurtheropened,andtheactionpotentialnaturallydrops.正确答案：E第6题单选题(1分)Themainpartofnervecellactionpotentialis()AThresholdpotentialBSpikepotentialCLocalpotentialDNegativeposteriorpotentialEPositiveposteriorpotential第7题单选题(1分)Whenexcitedthroughtheneuro-skeletalmusclejunction,acetylcholinebindstothetwoα-subunitsoftheN2typecholinergicreceptorontheendplatemembrane,makingtheendplatemembrane()AIncreasedpermeabilitytoNa+andK+,hyperpolarizationoccursBIncreasedpermeabilitytoNa+andK+anddepolarizationoccursCPermeabilityincreasesonlyforK+,hyperpolarizationoccursDPermeabilityincreasesonlyforCa2+,depolarizationoccursEAcetylcholinepermeabilityincreases,hyperpolarizationoccurs第8题单选题(1分)Thebasicstructuralandcontractilefunctionalunitsinskeletalmusclecellsare()AMyofibrilBMyocelesCMusclefiberDThickmusclefilamentEThinmusclefilament第9题单选题(1分)Theblockingagentthatcanblocktheexcitatorytransmissionatthenerve-musclejunctionis()AAmericandartpoisonBpufferfishpoisonCtetraethylammoniumDatropineEverapamil第10题单选题(1分)Regardingthecharacteristicsoflocalpotential,whichofthefollowingiswrong?()AThemagnitudeofthepotentialchangeswiththeintensityofthestimulusBcanbesummedCnorefractoryperiodDallornonephenomenaESpreadingintheformofelectrictension第11题单选题(1分)ThesarcomerelengthcorrespondingtotheoptimalinitiallengthofskeletalmuscleisA0.75～1.0μmB1.0

～

1.5μmC1.5

～

2.0μmD2.0

～

2.2μmE2.5μmormore第12题单选题(1分)Whenlowtemperature,hypoxiaormetabolicinhibitorsaffecttheNa+-K+pumpactivityofcells,itwillcause()ATherestingpotentialincreasesandtheamplitudeoftheactionpotentialdecreasesBTherestingpotentialdecreasesandtheamplitudeoftheactionpotentialincreasesCTherestingpotentialincreasesandtheamplitudeoftheactionpotentialincreasesDTherestingpotentialdecreasesandtheamplitudeoftheactionpotentialdecreasesENeitherrestingpotentialnoractionpotentialisaffectedQuestiontypeB第13题单选题(1分)Renaltubulereabsorptionofaminoacidsbelongsto()ASimplediffusionBFacilitatediffusionCPrimaryactivetransshipmentDExocytosisESecondaryactivetransit正确答案：E第14题单选题(1分)GastricmucosalwallcellssecreteH+()ASimplediffusionBFacilitatediffusionCPrimaryactivetransshipmentDExocytosisESecondaryactivetransit第15题单选题(1分)Onthebasisofrestingpotential,thenegativevalueofmembranepotentialincreases,whichiscalled()APolarizationBDepolarizationCRepolarizationDHyperpolarizationEDepolarization第16题单选题(1分)Theformationofrestingpotentialismainlydueto()AK+inflowBCl-inflowCNa+inflowDK+outflowECa2+influx第17题单选题(1分)Excitementistransmittedthroughunmyelinatednervefibers()ALocalcurrentBJumpconductionCChemicaltransmissionDElectrictensionspreadEElectro-chemicaltransfer第18题单选题(1分)Whentheintervalofcontinuousstimulationisgreaterthanthesystolicperiodandlessthanthesinglecontractionwhichofthefollowingwillappear()AAsinglecontractionBAseriesofsinglecontractionsCIncompleterigiditycontractionDCompletetoniccontractionENocontractionresponse第19题单选题(1分)Therepolarizationphaseoftheactionpotentialofnervecells,theactivityoftheelectrogenicsodiumpumpcancausethemembranetotemporarilyhyperpolarize()ASpikeBThresholdpotentialCLocalexcitementDPost-depolarizationpotential(negativepost-potential)EPost-hyperpolarizationpotential(positivepost-potential)正确答案：E第20题单选题(1分)Thebasicconditionforexcitementcausedbystimulationistodepolarizethemembranepotential()ASpikeBThresholdpotentialCLocalexcitementDPost-depolarizationpotential(negativepost-potential)EPost-hyperpolarizationpotential(positivepost-potential)章节测试第1题单选题(1分)Thebody'sintracellularfluidisusuallyidenticaltothetissuefluid()ANa+concentrationBK+concentrationCCl-concentrationDcolloidosmoticpressureEtotalosmoticpressure正确答案：E第2题单选题(1分)Thefluidvolumeandbloodvolumeofahealthyadultweighing50Kgarerespectively()A30Land2.5LB25Land2.5LC30Land4LD25Land3LE20Land4L第3题单选题(1分)Thespecificgravityofwholebloodismainlydeterminedby()AplasmaproteincontentBosmoticpressureCredbloodcellcountDwhitebloodcellcountENaClconcentration第4题单选题(1分)Whichofthefollowingisnotaphysiologicalfunctionofplasmaproteins()AtransportO2andCO2BbufferfunctionCparticipateinphysiologicalhemostasisDparticipateintheimmunefunctionofthebodyEmaintainplasmacolloidosmoticpressure第5题单选题(1分)Plasmacrystalosmoticpressuremainlycomesfrom()AinorganicsaltsBglucoseCalbuminDNa+andCl-Efibrinogen第6题单选题(1分)ThehighK+concentrationinplasmastoredatlowtemperatureforalongtimeisdueto()AhemolysisBsenescenceCerythrocytosisDlowglucosesupply.ENa+-K+pumpactivitydecreasedordisappeared正确答案：E第7题单选题(1分)Themainfunctionofredbloodcellsis()AregulatebodytemperatureBtransporthormonesCtransportO2andCO2DmakebloodredEsupplyiron第8题单选题(1分)Adecreaseintheratiooferythrocytesurfaceareatovolumemaycauseerythrocytes()AIncreaseindeformationBIncreaseinosmoticbrittlenessCIncreaseinsuspensionstabilityDdecreasedsedimentationrateEincreasedhemoglobincontent第9题单选题(1分)Thecauseofmegaloblasticanemiainapatientaftermajorgastricresectionwastheimpairmentofabsorptionofthesubstance()AproteinBfolicacidCvitaminB12Dfate.iron第10题单选题(1分)AspirininhibitsplateletaggregationandACTSmainlyon()AphospholipaseA2BthrombinsynthaseCthrombinDcyclooxygenaseEprostacyclinesynthase第11题单选题(1分)Thrombocytopeniacausesplateletaggregationdisordersdueto()AGPIb/IX/VanomalyBvWFdeficiencyCGPIIb/IIIaanomalyDfibrinogendeficiencyECa2+deficiency第12题单选题(1分)Thecommonpathwayofendogenousandexogenouscoagulationpathwaysbegins()AVBFVIIICFIXDFXEFXI第13题单选题(1分)Thereasonwhythyroidsurgeryispronetobleedingisthatthethyroidglandcontainsmore()AplasmaactivatorBtissueactivatorCfibrinolyticenzymeDanti-fibrinolyticenzymeEfibrindegradationproduct第14题单选题(1分)Whenredbloodcellscanonlybeagglutinatedbystandardanti-bserum,theirbloodtypeis()AOtypeBAtypeCBtypeDABtypeEUnabletodetermine第15题多选题(2分)Theroleofplateletsinphysiologicalhemostasisis()AProvidephospholipidsurfaceforclottingfactors;BReleasefibrinogenCReleaseofvasoconstrictingsubstancesandvasoconstrictionDAdhesionandaggregationtoformplateletthrombus正确答案：ABCD第16题多选题(2分)Whenthesmallbloodvesselsofnormalpeoplearedamaged,physiologichemostasisisrealizedthroughthefollowingprocesses()APlateletadhesiontothedamagedbloodvesselBPlateletaggregationtoformplateletthrombusCSmallbloodvesselsareconstrictedbyplateletsthatreleaseserotoninDformabloodclot正确答案：ABCD第17题多选题(2分)Thereasonwhynormalblooddoesnotclotinthebloodvesselsisthat()AfastbloodflowBsmoothandcompletevascularintimaCfunctionoffibrinolysissystemDpresenceofnaturalanticoagulants正确答案：ABCD第18题多选题(2分)Invitro,therearefactorsthatdelaycoagulationoranticoagulation()AaddheparintothebloodBaddpotassiumoxalateorammoniumoxalatetothebloodCaddwarfarintothebloodDcooldownappropriately正确答案：ABCD第19题多选题(2分)Therearewaystoacceleratebloodclotting()AVitaminKinjectionbeforesurgeryBHeparininjectionCapplywarmsalinegauzetostopbleedingduringsurgeryDincreasingtheconcentrationofCa2+intheblood正确答案：ACD第20题多选题(2分)Whichofthefollowingconditionscanacceleratebloodsedimentation()ARedbloodcellsofpatientswithacceleratedsedimentationwereimplantedintonormalplasmaBIncreasedfibrinogeninthebloodCincreasedalbumininthebloodDincreasedglobulinintheblood正确答案：BD章节测试第1题单选题(1分)Inwhichoneofthefollowingperiods,ventricularpressureincreasefastest?()ArapidfillingperiodBrapidejectionperiodCisovolumiccontractionperiodDreducedejectionphaseEdecreasedfillingphase第2题单选题(1分)Whenheartrateislessthan40beats/min,thecardiacoutputdecreased.Thisisdueto()AreducedmyocardialcontractilityBinadequatecardiacreliefCinadequateventricularfillingDventricularfillingisclosetothelimitEejectionreduction第3题单选题(1分)Aorticvalveclosurebeginsat()AatthebeginningofisovolumiccontractionphaseBatthebeginningofisovolumicrelaxationphaseCattheendofisovolumicrelaxationphaseDatthebeginningofrapidfillingphaseEatthebeginningofrapidejection第4题单选题(1分)Thefirstcardiacsoundismainlyproducedby()Aatrialcontraction,openingofatrioventricularvalveBVibrationcausedbyventricularrelaxationCVentricularcontractionandatrioventricularvalveclosurecausevibrationofventricularbloodandventricularwallDVibrationcausedbytheclosureofthearterialvalveduringrelaxationofventriclesEVibrationcausedbybloodimpingingontheaorticvalve第5题单选题(1分)Thecardiacindexisequalto()AStrokeoutputbodysurfaceareaBStrokeoutput/bodysurfaceareaCcardiacoutputbodysurfaceareaD(heartratebodysurfacearea)/cardiacoutputE(heartratestrokevolume)/bodysurfacearea正确答案：E第6题单选题(1分)Ectopicautoregulationregulatesthepumpingfunctionoftheheartbychanging()AaveragearterialpressureBheartratereserveCheartreserveDventricularend-systolicvolumeEventricularend-diastolicvolume正确答案：E第7题单选题(1分)Thecardiacfunctioncurveofpatientswithheartfailureislocatedin______ofthenormalcardiacfunctioncurve()AlowerleftBupperleftCleftDrightElowerright正确答案：E第8题单选题(1分)Theplateauofventricularmyocyteactionpotentialistheresultof_____transmembraneflow()ANa+inflow,Cl-outflowBNa+inflow,Ca2+outflowCc2+inflow,K+outflowDK+inflow,Ca2+outflowENa+inflow,Cl-inflow第9题单选题(1分)Thereasonforthecompensationlullafterpretermcontractionisthat()AdelayedreleaseofrhythmicexcitationinthesinoatrialnodeBTherhythmicexcitabilityofthesinoatrialnodeislessthanonceCTherateofrhythmicexcitatoryeffluxofthesinoatrialnodeisgreatlysloweddownDTheeffectiverefractoryperiodofpretermcontractionisparticularlylongEArhythmicexcitationofthesinoatrialnodefallswithintheeffectivedurationoftheprephasicexcitation正确答案：E第10题单选题(1分)Whenthemembranepotentialofventricularmyocytesdepolarizedfromrestingleveltothresholdpotentiallevel,theNa+channelwasat()ArestingstateBstandbystateCactivatedstateDinactivatedstateEnoneoftheabove第11题单选题(1分)Thefactorthatcanreducemyocardialexcitabilityis()ATheabsolutevalueofrestingpotentialincreases;BTheabsolutevalueofrestingpotentialdecreasesCTheabsolutevalueofthresholdpotentialincreases.DNa+channelisinthestandbystateEIncreasedbloodpotassiumconcentration第12题单选题(1分)Patientswithrightheartfailureareoftenaccompaniedby()AdecreasedjugularpressureBincreasedcentralvenouspressureCpulmonaryedemaDincreasedvenousreturnEdecreasedcapillarybloodpressure第13题单选题(1分)ThemajorfactoraffectingdiastolicpressureisAcardiacoutputBelasticityofthewalloftheaortaCcirculatingbloodvolumeDperipheralresistanceEstrokevolume第14题单选题(1分)ThesubstancethatcausesthealternateopeningofcapillariesiscAtransmitterBhormoneChistamineDlocalmetaboliteEkinin第15题单选题(1分)PatientswithleftheartfailureshowsignsofrightheartfailureAPulmonarycongestioncontinuestoexistBPulmonaryedemacontinuestoexistCReducedpulmonarycongestionDPulmonarycongestioncombinedwithsystemiccongestionEPulmonarycirculationandsystemiccirculationreturntonormal第16题多选题(2分)DuringtheisovolumiccontractionperiodABoththehalf-moonvalveandtheatrioventricularvalveareclosedBTheindoorpressurerisessharplyCTheventricularvolumeremainsunchangedDTheindoorpressureremainsunchanged正确答案：ABC第17题多选题(2分)ThemaincharacteristicsofventricularmyocyteactionpotentialdifferentfromskeletalmusclecellsareALongdurationofactionpotentialBThereisaclearplateauCLongeffectiverefractoryperiodDAsymmetryofrisingandfallingbranchesofactionpotential正确答案：ABD第18题多选题(2分)Regardingthebioelectricalactivityofsinusnodecells,thecorrectoneisAPhase0depolarizationspeedisslowerBPhase4automaticdepolarizationspeedisfasterCNoobviousrepolarizationphase1andplateauphaseDPhase0isformedbyNa+influx正确答案：ABC第19题多选题(2分)TheeffectofcatecholamineonmyocardialbioelectricactivityAIncreasetheCa2+influxofphase0oftheslowresponseactionpotentialBStrengthentheautodepolarizationrateofphase4autonomiccellsCSlowdowntherepolarizationphaseK+outflowDSlowdowntherisespeedoffastresponseactionpotential正确答案：AB第20题多选题(2分)Asthemainfactorthatdeterminesthesizeofthepre-ventricularload,thevenousbloodvolume,thefollowingstatementiscorrectAThehigherthecomplianceoftheventricle,thebettertheventricularfilling,andthemorevenousbloodflowBThefastertheCa2+droprateduringdiastole,thefasterthemyocardialdiastolicrate,andthestrongertheroleofventricularnegativepressuresuction;CThepressureinthepericardialcavityincreases,theventricularfillingislimited,andtheamountofvenousreturntotheheartdecreasesDThehighertheatrialpressure,thefasterthevenousreturnspeed,sothemorevenousbloodflowback正确答案：ABC章节测试第1题单选题(1分)Inwhichofthefollowingphases,thepulmonarypressureishigherthanatmosphericpressure?()AexpirationtimeBendofinspirationCendofexpirationDinhaletimeEbreathewhenpausedandtheairwayisclear第2题单选题(1分)Innerbreathingmeans()ACO2inpulmonarycapillariesflowintothealveoliBgasexchangebetweentissuecellsandcapillarybloodCgasexchangebetweenlungcapillariesandenvironmentDO2inalveoliflowintothepulmonarycapillariesEArterialbloodinthepulmonaryveinsenterstheleftatrium第3题单选题(1分)Thenecessaryconditiontomaintainnegativepressureinthepleuralcavityis()AThereissomeresistanceintherespiratorytractBThepleuralcavityisclosedCAsmallamountoffluidinthepleuralcavityDInspiratorymusclecontractionEIntrapulmonarypressureislowerthanatmosphericpressure第4题单选题(1分)Transpulmonarypressurerefersto()AdifferencebetweenlungpressureandatmosphericpressureBdifferencebetweenintrapulmonarypressureandintrapleuralpressureCdifferencebetweenatmosphericpressureandintrapleuralpressureDdifferencebetweenatmosphericpressureandthoracicretractionEdifferencebetweenatmosphericpressureandlungretraction第5题单选题(1分)Whichofthefollowingaboutintrapleuralpressureiscorrect()AThereisasmallamountofgasinthecavityBWhenexhaling,intrapleuralpressureequalsatmosphericpressureCWheninhalinghard,intrapleuralpressureispositiveDTheamountofintrapleuralpressureisdeterminedbytheforceoflungretractionEIntrapleuralpressureisnegativewhenpneumothorax第6题单选题(1分)Thenegativepressureintheintrapleuralcavityisformedby()Aatmosphericpressure-inelasticresistanceBatmosphericpressure+transpulmonarypressureCintrapulmonarypressure+transthoracicwallpressureDatmosphericpressure-pulmonaryretractionpressureEatmosphericpressure+pulmonaryretractionpressure第7题单选题(1分)Theretractionforceofthelungmainlycomesfrom()AalveolarelasticfibersBsurfacetensionofliquidmolecularlayerofalveoliCnegativechestpressureDthoracicelasticretractionEalveolarsurfactant第8题单选题(1分)Bywhichcellsinthelungpulmonarysurfactantissynthesizedandsecreted?()AalveoliⅠepithelialcellsBalveoliⅡepithelialcellsCairwayepithelialcellsDlungfibroblastEalveolarmacrophage第9题单选题(1分)Theindextomeasurethepotentialoflungventilationfunctionis()APulmonaryventilationBAlveolarventilationCForcedvitalcapacityD1secondforcedexpiratoryvolumeEVentilationreservepercentage正确答案：E第10题单选题(1分)Amongthefollowingpulmonarycapacities,themostsignificantdecreaseinpatientswithsevereasthmais()AforcedexpiratoryvolumeBvitalcapacityCforcedexpiratoryvolumeattheendof1secondDinspiratorycapacityEexpiratorycapacity第11题单选题(1分)Inwhichofthefollowingsituationswilltheventilation/perfusionratioincrease?()ApulmonaryedemaBemphysemaCasthmaattackDpulmonaryFibrosisEpulmonarycapillaryocclusion正确答案：E第12题单选题(1分)Theoxygendissociationcurveshiftsfromthenormalpositiontotheleft()AItshowsthatthebloodoxygencontentdecreasesatacertainoxygenpartialpressureBCanoccurwhenanemiaCindicatesthattheoxygencontentfromthebloodintothetissueincreasesDVisibleinbloodstoredforseveralweeksEVisiblewhentissuemetabolismincreases第13题单选题(1分)Whichofthefollowingaboutventilation/perfusionratioiswrong?()Anormalvalueinquietstateis0.84Bdecreasingofventilation/perfusionratiomeansthatthealveolarineffectivecavityincreasesCApexratiocomparebigDratioinpulmonarybottomissmallestEinpulmonaryembolism,theratioincreases第14题单选题(1分)Theeffectivestimulustoenhancepulmonaryventilationbyexcitingcentralchemoreceptorsis()AincreasedconcentrationofcerebrospinalfluidH+BincreasedpartialpressureofcerebrospinalfluidCO2CdecreasedO2partialpressureofcerebrospinalfluidDincreasedH+concentrationofarterialbloodEdecreasedO2partialpressureofarterialblood第15题单选题(1分)ThestimulationofrespirationwhenthepartialpressureofCO2inthebloodisincreasedismainlyachievedbywhichofthefollowing()ADirectlystimulatecentralrespiratoryneuronsBStimulatecentralchemoreceptorCStimulatecarotidbodyandaorticbodyreceptorsDStimulatecarotidsinusandaorticarchreceptorsEStimulatecardiorespiratoryreceptorsFStimulatecardiorespiratoryreceptors第16题单选题(1分)Apatientwithpulmonaryheartdiseasehasasignificantdecreaseinarterialbloodoxygenpartialpressure.Thepatientwasinhaledwithpureoxygenbutcausedapnea.Themainreasonis()AReducedsensitivityofperipheralchemoreceptorsBRemovedhypoxicstimulationofperipheralchemoreceptorsCDecreasedsensitivityofcentralchemoreceptorsDLackofCO2stimulationofcentralchemoreceptorsETherespiratorycenterlosesitsresponsivenesstostimuli第17题单选题(1分)Undernormalcircumstances,theeffectivestimulustomaintaintheexcitabilityoftherespiratorycenteris()AAfferentimpulseoflungstretchreceptorsBAfferentimpulseofrespiratorymuscleproprioceptorsCO2deficiencytoacertainextentDPCO2leveltoacertainextentEHighconcentrationofCO2第18题单选题(1分)ThehighestCO2partialpressureinthebodyis()ACapillarybloodBIntracellularfluidCTissuefluidDArterialbloodEVenousblood章节测试第1题单选题(1分)Whichofthefollowingdescriptionabouttheelectrophysiologicalcharacteristicsofgastrointestinalsmoothmuscleiswrong?()ATherestingpotentialismainlyformedbytheequilibriumpotentialofK+BTherestingpotentialamplitudeislowerthanthatofskeletalmuscleCslowwavepotentialoriginatesfromCajajstromalcellsDthegenerationofactionpotentialisrelatedtoNa+influxESlowwavefrequencyplaysadecisiveroleintherhythmofsmoothmusclecontraction正确答案：E第2题单选题(1分)What'swrongabouttheroleofsaliva?()AmoistfoodandmakeiteasytoswallowBdissolvefood,causetastesensationCbreakdownstarchintoglucoseDkillbacteriaandviruses,soastocleanandprotectthemouthEexcretesomeheavymetals,cyanide,andrabiesvirus第3题多选题(2分)Whichofthefollowingstatementabouttheloweresophagealsphincter()iswrong?()AThisareaisafunctionalsphincterBThepressureinitis5-10mmhghigherthanthatinthestomachCreflexivedilationoffoodasitpassesfromthemouthtotheesophagusDexcessivedrinkingandsmokingcanincreaseLEStensionEPreventgastriccontentsfromenteringtheesophagusagainstreflux正确答案：DE第4题单选题(1分)Whichofthefollowingstatementaboutpepsiniswrong?()AThesynthesisandsecretionbythemaincellisinthestateofproenzymeBpepsinogencanbeactivatedbyhydrochloricacidCTheproteinisonlydecomposedintofreeaminoacidsDTheoptimalpHforitsfunctionis1.8-3.5EWhenPHexceeds5,irreversibledegenerationwilloccur第5题单选题(1分)Whichofthefollowingaboutthecharacteristicsofgastricjuicesecretioncausedbydirectinjectionofproteinfoodintothestomachisright?()Ahighacidity,butlowproteasecontentBhighacidity,highpepsincontentClowacidity,highpepsincontentDlowacidity,lowpepsincontentElowacidityandmucus第6题单选题(1分)Themainmechanismbywhichacidchymeentersthesmallintestineandcausesthesecretionoflargeamountsofpancreaticjuiceis()AreleaseofgastrinbythemucosaofthesmallintestineBreleaseoftrypsinbythemucosaofthesmallintestineCthesmallintestinalmucosareleasescholecystokininDexcitationofvagusnerveEexcitationofsympathetic第7题单选题(1分)Whichofthefollowingdoesnotbelongtobile?()AbilepigmentBbilesaltCcholesterolDsodiumbicarbonateElipase正确答案：E第8题单选题(1分)Themainpartwhichabsorbnutrientsis()AoralcavityBstomachCsmallintestineDascendingcolonEtransversecolon第9题单选题(1分)Severevomitingoccurringinpatientswithpyloricobstructionmaycause()AmetabolicalkalosisBrespiratoryalkalosisCmetabolicacidosisDmixedacidosisErespiratoryacidosis第10题单选题(1分)WhichisthepartofactiveabsorptionofbilesaltandvitaminB12?()AduodenalintestineBjejunumCileumDcolonEstomach第11题单选题(1分)Gastrointestinalhormonethatinhibitgastricacidsecretionis()AgastrinandcholecystokininBgastrinandcholecystokininCtry